Summer Sonic Festival was founded in 2000 in Japan, with a focus on major national and international acts.
The EDM section of the festival was later split into Sonicmania which is held at Makurai Messe the day before the festival, which according to Time Out, “Held as a warm-up for Summer Sonic each year, the all-night Sonicmania party caters to dance kids who aren’t so well served by the main festival itself” in 2011.
Producer Creativeman formed a joint venture with Live Nation Entertainment in 2012. Live Nation bought full control of the venture in 2014.
The Summer Sonic Festival is an annual 2 or 3-day rock festival held at the same time in Osaka and Chiba. The majority of the bands playing in Osaka the first day go to Chiba the following day and vice versa. The line-up contains many Japanese rock musicians from both major and indie record companies, and also international acts. It also operates the festival Sonicmania, with an EDM focus, since 2011. Summer Sonic is an independent festival, owned by Creativeman Productions Ltd.